Some bacteria live in hot springs. Their cells contain enzymes that function best at temperatures of 70 °C or higher. At the temperature of 50 °C, how will the enzymes in these bacterial cells most likely be affected?

The enzymes will not increase the rate of reactions as much as they would at 70 °C.

The enzymes will be destroyed by lysosomes

The enzymes will lose their bond structure and fall apart.

The enzymes will require less energy to function than at 70 °C.

The graph below shows how the activity of an enzyme changes over a range of pH values. Which of the following conclusions can be drawn from this graph?

The optimum pH of the enzyme is 6.6.

The optimum pH of the enzyme is 5.8

The enzyme’s activity continually increases as pH increases from 5.0 to 9.0

The enzyme’s activity is greater around pH of 8.0 than around pH of 5.0.

What will most likely happen if an appropriate enzyme is added to a chemical reaction?

The reaction rate will increase.

The equilibrium of the reaction will be maintained.

The reaction rate will decrease.

The human body maintains a temperature of around 98.6 degrees at all times. Enzymes are involved in almost every chemical reaction in the body. Which of the following describes the connection between these two statements?

Enzymes function best at a specific temperature.

The body needs to be warm to prevent hypothermia.

The body is kept relatively warm to prevent too much enzyme action.

There is no connection between the two statements.

As food travels through the digestive system, it is exposed to a variety of pH levels. The stomach has a pH of 2 due to the presence of hydrochloride acid (HCl), and the small intestine has a pH ranging from 7 to 9. HCl converts pepsinogen into pepsin, an enzyme that digests proteins in the stomach. Which of the following most likely happens to pepsin as it enters the small intestine?

It's shape changes to engulf large proteins.

It's activity increases to digest more proteins.

The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?

Enzyme decrease the activation energy of the reaction.

Enzymes increase the energy of the reactants.

Enzymes decrease the energy level of the products.

Enzymes reverse the direction of the reaction.

Enzymes need certain environmental conditions in order to function properly. What happens when enzymes are heated to a high temperature?

they change their amino acid sequence

What is the purpose of cellular respiration?

there is none; it's a waste of time

What is the correct equation for cellular respiration?

6O 2 + C 6 H 12 O 6 -> 6CO 2 + 6H 2 O + Energy

6O 2 + C 6 H 12 O 6 + Energy -> 6CO 2 + 6H 2 O

6CO 2 + 6H 2 O -> 6O 2 + C 6 H 12 O 6 + Energy

6CO 2 + 6H 2 O + Energy -> 6O 2 + C 6 H 12 O 6

Which of the following is the correct equation for PHOTOSYNTHESIS?

CO 2 + light + H 2 O --> O 2 + Sugar

CO 2 + sugar + H 2 O --> O 2 + light

O2 + light + H 2 O --> CO 2 + Sugar

CO 2 + O 2 + H 2 O --> Light+ Sugar

A product of photosynthesis and a reactant of cellular respiration

A product of photosynthesis and cellular respiration

A reactant of photosynthesis and cellular respiration

A reactant of photosynthesis and a product of cellular respiration

A form of energy the cell can use that is produced by cellular respiration

A kind of sugar produced in photosynthesis

QSE1 Biology Review

Authored by Kristal Kaidasz

Biology, Science, Chemistry

9th - 10th Grade

NGSS covered

Used 3+ times

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81 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is represented in the image?

Nucleotide

Carbohydrate

Lipid

Protein

Tags

NGSS.HS-LS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is a function of carbohydrates?

To provide energy to living organisms

The provide the structure in muscles

Providing insulation

Storing your genetic information

Tags

NGSS.HS-LS1-7

MULTIPLE SELECT QUESTION

30 sec • 1 pt

What biomolecules are NOT used for energy (two answers, choose both before continuing)?

Carbohydrates

Lipids

Proteins

Nucleic acids

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the best definition of the function of nucleic acids?

They contain defense mechanisms against bacteria

They contain the information that makes you and makes you different from every other living thing

They are used as the structural components of the body (muscles and organs)

They create the cell membrane

Tags

NGSS.HS-LS1-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a function of lipids?

To provide short term energy to living organisms

The provide the structure in muscles

To provide long term storage of energy

Storing your genetic information

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the function of proteins?

They are used for cell to cell communication

They insulate the body, are used for short term energy and are found in glycogen

They are used as the structural components of the body (muscles and organs)

They create the cell membrane

Tags

NGSS.HS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

5. Which biomolecules provide quick energy for the cell and also provide materials to build the cell membrane/wall?

Carbohydrates

Proteins

Lipids

Nucleic Acids

Tags

NGSS.MS-LS1-7

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QSE1 Biology Review

Which of the following is represented in the image?

What is a function of carbohydrates?

What biomolecules are NOT used for energy (two answers, choose both before continuing)?

What is the best definition of the function of nucleic acids?

What is a function of lipids?

What is the function of proteins?

5. Which biomolecules provide quick energy for the cell and also provide materials to build the cell membrane/wall?

2. Which biomolecules contains your genetic information?

9. Amino Acids are the monomers of __________.

Just under an orca's skin lies a thick layer of blubber. Blubber helps insulate a whale from heat loss. Based on this information, which biomolecule is blubber primarily made of?

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